119 lines
3.1 KiB
C
119 lines
3.1 KiB
C
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/**************************************************************************//**
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*
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* @copyright (C) 2020 Nuvoton Technology Corp. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2022-2-23 Wayne First version
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*
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******************************************************************************/
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#include <rtconfig.h>
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#if defined(NU_PKG_USING_SSD1963_EBI)
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#include <lcd_ssd1963.h>
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#include "drv_pdma.h"
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#define SSD1963_ADDR_CMD 0x0
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#define SSD1963_ADDR_DATA 0x0
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#define ssd1963_reg_write(u32RegAddr) (*((volatile unsigned short *)(g_uint32_ssd1963_base+(SSD1963_ADDR_CMD))) = (u32RegAddr))
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#define ssd1963_read_data() (*((volatile unsigned short *)(g_uint32_ssd1963_base+(SSD1963_ADDR_DATA))))
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#define ssd1963_write_data(u32Data) (*((volatile unsigned short *)(g_uint32_ssd1963_base+(SSD1963_ADDR_DATA))) = (u32Data))
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static rt_uint32_t g_uint32_ssd1963_base = 0;
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void ssd1963_send_cmd(rt_uint8_t cmd)
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{
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CLR_RS;
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ssd1963_reg_write(cmd);
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SET_RS;
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}
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void ssd1963_send_cmd_parameter(rt_uint8_t data)
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{
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ssd1963_write_data(data);
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}
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void ssd1963_send_pixel_data(rt_uint16_t color)
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{
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ssd1963_write_data(color);
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}
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void ssd1963_send_pixels(rt_uint16_t *pixels, int len)
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{
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int count = len / sizeof(rt_uint16_t);
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if (count < 1024)
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{
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// CPU feed
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int i = 0;
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while (i < count)
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{
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ssd1963_write_data(pixels[i]);
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i++;
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}
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}
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else
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{
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// PDMA-M2M feed
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nu_pdma_mempush((void *)(g_uint32_ssd1963_base + (SSD1963_ADDR_DATA)), (void *)pixels, 16, count);
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}
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}
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void ssd1963_set_column(uint16_t StartCol, uint16_t EndCol)
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{
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ssd1963_send_cmd(0x2A);
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ssd1963_write_data((StartCol >> 8) & 0xFF);
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ssd1963_write_data(StartCol & 0xFF);
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ssd1963_write_data((EndCol >> 8) & 0xFF);
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ssd1963_write_data(EndCol & 0xFF);
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}
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void ssd1963_set_page(uint16_t StartPage, uint16_t EndPage)
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{
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ssd1963_send_cmd(0x2B);
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ssd1963_write_data((StartPage >> 8) & 0xFF);
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ssd1963_write_data(StartPage & 0xFF);
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ssd1963_write_data((EndPage >> 8) & 0xFF);
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ssd1963_write_data(EndPage & 0xFF);
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}
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void ssd1963_lcd_get_pixel(char *color, int x, int y)
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{
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rt_uint16_t red = 0;
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rt_uint16_t green = 0;
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rt_uint16_t blue = 0;
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if (x >= XSIZE_PHYS || y >= YSIZE_PHYS)
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{
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*(rt_uint16_t *)color = 0;
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return;
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}
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ssd1963_set_column(x, x);
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ssd1963_set_page(y, y);
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ssd1963_send_cmd(0x2E);
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ssd1963_read_data(); // Dummy
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red = ssd1963_read_data(); // Red[4:0]@D15~D11
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blue = ssd1963_read_data(); // Blue[4:0]@D15~D11
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green = ssd1963_read_data(); // Green[5:0]@D15~D10
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//BGR565: B in High byte, R in low byte
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//*(rt_uint16_t *)color = (((blue >> 11) << 11) | ((green >> 10) << 5) | (red >> 11));
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//RGB565: R in High byte, B in low byte
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*(rt_uint16_t *)color = (((red >> 11) << 11) | ((green >> 10) << 5) | (blue >> 11));
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}
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rt_err_t rt_hw_lcd_ssd1963_ebi_init(rt_uint32_t ssd1963_base)
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{
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g_uint32_ssd1963_base = ssd1963_base;
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return RT_EOK;
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}
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#endif /* if defined(NU_PKG_USING_SSD1963_EBI) */
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